{"api_version":"1","generated_at":"2026-04-23T03:25:11+00:00","cve":"CVE-2021-3670","urls":{"html":"https://cve.report/CVE-2021-3670","api":"https://cve.report/api/cve/CVE-2021-3670.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-3670","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3670"},"summary":{"title":"CVE-2021-3670","description":"MaxQueryDuration not honoured in Samba AD DC LDAP","state":"PUBLIC","assigner":"secalert@redhat.com","published_at":"2022-08-23 16:15:00","updated_at":"2023-09-17 09:15:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b","name":"https://gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b","refsource":"MISC","tags":[],"title":"CVE-2021-3670 dsdb/anr: Do a copy of the potentially anr query before starting to modify it (5f059036) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803","name":"https://gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803","refsource":"MISC","tags":[],"title":"CVE-2021-3670 ldap_server: Set timeout on requests based on MaxQueryDuration (86fe9d48) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393","name":"https://gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393","refsource":"MISC","tags":[],"title":"CVE-2021-3670 ldap_server: Clearly log LDAP queries and timeouts (3507e96b) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f","name":"https://gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f","refsource":"MISC","tags":[],"title":"CVE-2021-3670 ldb: Confirm the request has not yet timed out in ldb filter processing (1d5b1556) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002","name":"https://gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002","refsource":"MISC","tags":[],"title":"CVE-2021-3670 ldap_server: Remove duplicate print of LDAP search details (2b3af3b5) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81","name":"https://gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81","refsource":"MISC","tags":[],"title":"CVE-2021-3670 tests/krb5/test_ldap.py: Add test for LDAP timeouts (dcfcafdb) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.gentoo.org/glsa/202309-06","name":"https://security.gentoo.org/glsa/202309-06","refsource":"MISC","tags":[],"title":"Samba: Multiple Vulnerabilities (GLSA 202309-06) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049","name":"https://gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049","refsource":"MISC","tags":[],"title":"CVE-2021-3670 ldap_server: Ensure value of MaxQueryDuration is greater than zero (e1ab0c43) · Commits · The Samba Team / Samba · GitLab","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://bugzilla.samba.org/show_bug.cgi?id=14694","name":"https://bugzilla.samba.org/show_bug.cgi?id=14694","refsource":"MISC","tags":[],"title":"14694 – (CVE-2021-3670) CVE-2021-3670 [SECURITY] MaxQueryDuration not honoured in Samba AD DC LDAP","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2077533","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2077533","refsource":"MISC","tags":[],"title":"2077533 – (CVE-2021-3670) CVE-2021-3670 samba: MaxQueryDuration not honoured in Samba AD DC LDAP","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3670","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3670","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"3670","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"35","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3670","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"redhat","cpe5":"storage","cpe6":"3.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"3670","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"samba","cpe5":"samba","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-3670","qid":"180150","title":"Debian Security Update for ldb (CVE-2021-3670)"},{"cve":"CVE-2021-3670","qid":"198878","title":"Ubuntu Security Notification for Samba Vulnerabilities (USN-5542-1)"},{"cve":"CVE-2021-3670","qid":"502789","title":"Alpine Linux Security Update for samba"},{"cve":"CVE-2021-3670","qid":"505682","title":"Alpine Linux Security Update for samba"},{"cve":"CVE-2021-3670","qid":"671918","title":"EulerOS Security Update for samba (EulerOS-SA-2022-2011)"},{"cve":"CVE-2021-3670","qid":"671954","title":"EulerOS Security Update for samba (EulerOS-SA-2022-1981)"},{"cve":"CVE-2021-3670","qid":"672025","title":"EulerOS Security Update for samba (EulerOS-SA-2022-2262)"},{"cve":"CVE-2021-3670","qid":"672058","title":"EulerOS Security Update for samba (EulerOS-SA-2022-2249)"},{"cve":"CVE-2021-3670","qid":"672587","title":"EulerOS Security Update for samba (EulerOS-SA-2023-1336)"},{"cve":"CVE-2021-3670","qid":"710751","title":"Gentoo Linux Samba Multiple Vulnerabilities (GLSA 202309-06)"},{"cve":"CVE-2021-3670","qid":"752114","title":"SUSE Enterprise Linux Security Update for ldb (SUSE-SU-2022:1576-1)"},{"cve":"CVE-2021-3670","qid":"752303","title":"SUSE Enterprise Linux Security Update for ldb, samba (SUSE-SU-2022:2307-1)"},{"cve":"CVE-2021-3670","qid":"903822","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for samba (10662)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2021-3670","ASSIGNER":"secalert@redhat.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"MaxQueryDuration not honoured in Samba AD DC LDAP"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-400 - Uncontrolled Resource Consumption","cweId":"CWE-400"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"samba","version":{"version_data":[{"version_affected":"=","version_value":"Affects Samba 4.1 and newer."}]}}]}}]}},"references":{"reference_data":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2077533","refsource":"MISC","name":"https://bugzilla.redhat.com/show_bug.cgi?id=2077533"},{"url":"https://bugzilla.samba.org/show_bug.cgi?id=14694","refsource":"MISC","name":"https://bugzilla.samba.org/show_bug.cgi?id=14694"},{"url":"https://gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/1d5b155619bc532c46932965b215bd73a920e56f"},{"url":"https://gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/dcfcafdbf756e12d9077ad7920eea25478c29f81"},{"url":"https://gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/86fe9d48883f87c928bf31ccbd275db420386803"},{"url":"https://gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/e1ab0c43629686d1d2c0b0b2bcdc90057a792049"},{"url":"https://gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/2b3af3b560c9617a233c131376c870fce146c002"},{"url":"https://gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/5f0590362c5c0c5ee20503a67467f9be2d50e73b"},{"url":"https://gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393","refsource":"MISC","name":"https://gitlab.com/samba-team/samba/-/commit/3507e96b3dcf0c0b8eff7b2c08ffccaf0812a393"},{"url":"https://security.gentoo.org/glsa/202309-06","refsource":"MISC","name":"https://security.gentoo.org/glsa/202309-06"}]}},"nvd":{"publishedDate":"2022-08-23 16:15:00","lastModifiedDate":"2023-09-17 09:15:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.0","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"3670","Ordinal":"213338","Title":"CVE-2021-3670","CVE":"CVE-2021-3670","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"3670","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}